Astronomy › Section H · The Moon, Mercury, Venus, and Mars › Topic H.7
The geology of Mars
Mars is half Earth's width, but it holds the largest volcano and one of the longest canyon systems in the solar system. Its rocks record a planet that was busy early on and has slowed almost, but perhaps not quite, to a stop.
In this topic
- The best-explored planet after Earth
- Rocks from Mars on Earth
- Worked example: why rocks escape Mars
- A planet of two halves
- Tharsis and the giant volcanoes
- Why Martian volcanoes grow so large
- Worked example: how tall can a mountain be?
- Valles Marineris and other scars
- Is Mars still active?
- Common mistakes to avoid
- Key takeaways
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